County annual report · FIPS 46045
2023 Edmunds County, SD Power Outage Report
In 2023, customers in Edmunds County, SD went without power for an average of 1.0 hours, a total of 2,126 customer-hours (South Dakota average 2.3 hours). That ranks 49th worst of 61 South Dakota counties and 2690th of 2,977 nationally.
Compared with SD, the US and 2022
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Edmunds County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 5, 2023 08:15 | September 5, 2023 09:30 | 1h 15m | 503 | 622 |
| 2 | June 15, 2023 06:15 | June 15, 2023 09:15 | 3h | 223 | 665 |
| 3 | October 31, 2023 00:45 | October 31, 2023 02:45 | 2h | 220 | 201 |
| 4 | October 30, 2023 22:30 | October 30, 2023 23:30 | 1h | 218 | 86 |
| 5 | July 23, 2023 20:45 | July 23, 2023 23:45 | 3h | 78 | 234 |
| 6 | August 31, 2023 22:15 | August 31, 2023 23:00 | 45m | 75 | 56 |
| 7 | July 25, 2023 06:00 | July 25, 2023 06:45 | 45m | 74 | 56 |
| 8 | October 5, 2023 17:30 | October 5, 2023 20:15 | 2h 45m | 57 | 66 |
| 9 | October 1, 2023 20:00 | October 1, 2023 23:45 | 3h 45m | 9 | 34 |
| 10 | December 27, 2023 04:30 | December 27, 2023 16:00 | 11h 30m | 9 | 104 |
Outage episodes by size in 2023: 4 reached 100+ customers, 0 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Edmunds County reported on EIA Form 861 for 2023, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| NorthWestern Energy - (SD) | 2023 | 1.9 hrs | 1.37 | 74 min | 1.03 |
| Northern Electric Coop, Inc | 2023 | 74 min | 0.67 | 54 min | 0.55 |
| FEM Electric Assn, Inc | 2018 | 3.8 hrs | 2.21 | 3.8 hrs | 2.21 |
| Montana-Dakota Utilities Co | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of South Dakota's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,191 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Edmunds County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Edmunds County, SD annual power outage report, 2023, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2023/south-dakota/edmunds-county